Career
Johar formally entered the film industry as an actor, portraying Raj's (Shahrukh Khan) close friend in Dilwale Dulhania Le Jayenge (1995). He was also assistant director on the film and helped director Aditya Chopra in writing the screenplay. In addition, he selected Shahrukh Khan's costumes, something he continued to do for Shahrukh Khan's other movies like Dil To Pagal Hai (1997), Duplicate (1998), Mohabbatein (2000), Main Hoon Na and Veer-Zaara (2004) and Om Shanti Om (2007).
Johar made his directorial debut at the age of 25 with the cult film Kuch Kuch Hota Hai in 1998 which he also wrote the story and screenplay for.
Dharma Productions, founded by his father, is Johar's production company. He became the main producer of the company after his father's death. In a 2003 interview with The Hindu, he explained his production strategy: "I wanted my production house to walk before running. I need to be streamlined, build my infrastructure. I do want to make all kinds of movies because I have watched all kinds of movies.
In 2004, Johar became the host of the celebrity-based chat show Koffee with Karan, in which he interviewed renowned celebrities from Bollywood and India's glamour world.
Filmography:
Dilwale Dulhania Le Jayenge (1995) – Rocky
Main Hoon Na (2004) – Credits
Home Delivery: Aapko... Ghar Tak (2005) – Himself
Alag (2006) – (himself/voice in the song "Sabse Alag")
Salaam-e-Ishq (2007) – (himself/voice)
Om Shanti Om (2007) – (cameo as himself)
C Kkompany (2008) – (cameo as the Game show host)
Fashion (2008) – (cameo as himself)
Luck by Chance (2009) – (cameo as himself)